1. AC Question's Avatar
    I have Samsung Galaxy Grand prime , when I checked for Software update it said "The Operating system on your device been modified in unauthorised way. try downloading software updates using Samsung Kies on your Pc or visit a customer service center".

    what should I do to un-modified my device?
    08-25-2015 12:46 PM
  2. LeoRex's Avatar
    Well, I presume that you must have rooted your phone, correct? Because rooting and loading a custom recovery are the two most common things that could trigger that kind of message.

    Go look through this post : [GUIDE] Force Samsung Emergency Recovering with Samsung Kies
    Ruchira Sheyan likes this.
    08-25-2015 01:53 PM
  3. Fatima_1998's Avatar
    LeoRex , thank you for the help. However, to tell you the truth I am not sure if I rooted my phone or loaded a custom recovery.
    08-26-2015 04:03 AM
  4. LeoRex's Avatar
    LeoRex , thank you for the help. However, to tell you the truth I am not sure if I rooted my phone or loaded a custom recovery.
    Well, if you did either, you would know. It isn't something that you just accidently click on (especially on a Samsung, they lock stuff down tight and it requires a bit of finess most times). Did you buy the phone used?
    08-26-2015 11:47 AM
  5. Fatima_1998's Avatar
    LeoRex, I Think I may did it, however by mistake, because I like to discover new thing when I get a new phone or any other device, also this is my first time to get Samsung phone, but are you sure that what you told me will really help me ?

    Thank you!
    08-27-2015 06:16 AM
  6. LeoRex's Avatar
    Well, the over the air updates (aka OTA), they are usually always very particular about any system modification. Whether it be root, or a custom recovery, etc, pretty much any system modification will cause those updates to fail. Now, if you want to update your phone, most likely your only option will be to reload the factory image (which will most likely wipe EVERYTHING from the phone).. once that is all loaded and booted up, you should be able to take the update.
    08-28-2015 02:21 PM
  7. jrod5673's Avatar
    Hey bossman, I was wondering if you knew where one might find the OEM firmware to to download and reload the factory image, after root since sammobile is down
    Many thanks
    12-11-2015 10:19 PM
  8. jaleelhamid's Avatar
    Well, if you did either, you would know. It isn't something that you just accidently click on (especially on a Samsung, they lock stuff down tight and it requires a bit of finess most times). Did you buy the phone used?
    I bought it used and I think mine is rooted. Is their away to remove it without pc
    08-04-2016 04:34 PM
  9. LeoRex's Avatar
    I bought it used and I think mine is rooted. Is their away to remove it without pc
    Without a PC, I don't think its possible for the device you have. For a Samsung device, about the only way would be if you can get yourself to a Samsung store. In the US, there are Sammy stores inside Best Buy stores... outside the US... I am not sure.
    08-04-2016 09:50 PM
  10. jaleelhamid's Avatar
    No other ways?
    08-06-2016 10:57 AM
  11. LeoRex's Avatar
    No other ways?
    The only way to load full system images on a phone without a PC is if you have TWRP installed and have a working phone to download flashable ROM images. If not, you are stuck having to tether that thing off a remote source.
    08-06-2016 10:25 PM
  12. jaleelhamid's Avatar
    The only way to load full system images on a phone without a PC is if you have TWRP installed and have a working phone to download flashable ROM images. If not, you are stuck having to tether that thing off a remote source.
    Thank you.. Do you know where I can find a guide to. Do that
    08-07-2016 12:32 AM
  13. LeoRex's Avatar
    There's a link around here that might work with the Grand... I'll find it and get back to you.
    08-10-2016 08:57 AM
  14. LeoRex's Avatar
    08-10-2016 09:11 AM
  15. Woodstock13's Avatar
    When I went to "About Phone" to check for updates I received a message telling me the operating system on my device has been modified in an unauthorized way. And I'm assuming therefore I cannot update my device. I have Samsung Core 4.4.4
    08-27-2016 05:19 PM
  16. summit sajwan's Avatar
    Well, I presume that you must have rooted your phone, correct? Because rooting and loading a custom recovery are the two most common things that could trigger that kind of message.

    Go look through this post : [GUIDE] Force Samsung Emergency Recovering with Samsung Kies
    Plz help me...my phone is root..i want software update..plzz
    09-21-2016 01:46 PM
  17. hirapara Pradip's Avatar
    09-24-2016 12:32 AM
  18. Rob Weir's Avatar
    I bought an S7 from Koodo 2 months ago. I have not rooted or modified this device in any way other than trying out some different launchers. Would Samsung be so uptight to give me this error just for using a launcher other than their own?
    10-25-2016 09:32 AM
  19. HaR0n's Avatar
    Hey lorex. What if i unroot my s6 edge then try to update
    04-11-2017 11:32 PM
  20. skorpyo2011's Avatar
    Crossin my fingers, downloading lollipop update thru kies for samsung 10.1 (2014 edition) all the while ota didnt work cause of modified. Of course cause I had twerp installed....at 85% now. Show result in a second.............dwnloading screen now on tablet.......and, I pray........31%...81%......holy hell.. it worked.
    08-07-2017 03:43 PM
  21. Graniti's Avatar
    Please help i have the same problem������ this app says that my phone is not rooted although in my phones status it says custom. ������ [language redacted by Mod] do I do ? Do i put it in rice does that help?
    Attached Thumbnails The Operating system on your device been modified in unauthorized way, what should I do?-screenshot_20170922-054842.jpg   The Operating system on your device been modified in unauthorized way, what should I do?-screenshot_20170922-055053.jpg  
    09-21-2017 10:55 PM

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